The vector ai + bj + ck is a bisector of the angle between the vectors i + j and j + k if

The angle between the vectors i+j and j+k is

The angle between the vectors (i + j + k) and (i- j - k) is

The angle between the vectors i-j+k and -i+j+2k is

" The angle between the vectors "2i+j-3k" and "3i-2j-k" is "

The angle between the vectors 2i - 3j + k and 4i+ j-2k is given by

The vector abar(i)+b""bar(j)+cbar(k) is a bisector of the angle between the vectors bar(i)+bar(j) and bar(j)+bar(k) if

Find angle between the vectors 2i+j+k" and "i-j+k .

The sine of the angle between the vectors I + 3j - 2k, 2i - 4j - k is